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The Nobel Prize in Physiology or Medicine 2005

Photo: C. Northcott

Barry J. Marshall

Prize share: 1/2

Photo: U. Montan

J. Robin Warren

Prize share: 1/2

The Nobel Prize in Physiology or Medicine 2005 was awarded jointly to Barry J. Marshall and J. Robin Warren "for their discovery of the bacterium Helicobacter pylori and its role in gastritis and peptic ulcer disease"